The Ed Sullivan Theater is a theater located at 1697–1699 Broadway, between West 53rd and West 54th, in the Theater District in Manhattan, New York City. The theater has been used as a venue for live and taped CBS broadcasts since 1936. It housed David Letterman's tenure of CBS' Late Show from 1993 to 2015. The theatre currently houses The Late Show with Stephen Colbert, the second incarnation of the Late Show franchise. (wikipedia.org)